Automobile warning device.



B. ZABEL. AUTOMOBILE WARNING DEVICE.

APPLICA'IION FILED AUG.3. 19F].

Patented Mar. 4,1919.

WITNESSES BRUNO ZAIBEL, OF EDGEWOOD BOROUGH, PENNSYLVANIA.

AUTOMOBILE WARNING- DEVICE.

Specification of Letters Patent.

Patented Mar. 4, 1.919.

Original application filed September 5, 1916, Serial No. 118,325. Divided and this application filed August 3,

1917. Serial No. 184.227.

vices, on which Letters Patent No. 1,236,526

were granted on August 14, 1917. j

I will describe one form of apparatus embodying my invention and will then point out the novel features thereof in claim. The accompanying drawing is a view, partly diagrammatic, showing one form of apparatus embodying my invention;

Referring to the drawing, I have here shown an automobile comprising "a rear wheel 15. Attached to this wheel. is the usual brake drum 30,within which is located 'a brake band 31, which band is controlled in the usual manner by a cam 32. This cam is operatively connected with the usual brake lever10 through the medium oflinks 9 and 33, the lever 10 being pivoted at 10 to the framework of the car. The lever 10 is provided as usual with a dog 17 which is controlled by a latch 17 andwhich coacts with a fixed segment 18 having notches adapted to receive the dog. It is understood that with the lever 10 in the position shown in the drawing the brake is partially applied; to release the brake the lever 10 is swung to the left to such position that the dog 17 passes off of the segment 18. The lever 10 p may be swung to the right from the position shown to cause a more forcible application of the brake.

Fixed to the link 33 is a member 34 which controls a contact finger 35 pivotally mounted at 35. This contact finger is biased by'a spring 36 to such position that it engages with a fixed contact 35, and it is permitted to assume this engaging position when the brake is fully released. As soon as a partial application of the brake occurs, however, member 34 moves to the right and swings contact finger 35 out of engagement with contact 35 as shown in the drawing. This contact 35 controls a relay 37, the circuit including a contact 2 which is controlled by a lock 1. The circuit for relay 4 is from battery 19, through wires 38 and 39, contact 35, wire 40, relay 37, wire 41, contact 2, wire 42 to battery 19. It will be seen, therefore, that relay 37 will be energized whenever contact 2 is closed and the brake is released. Relay 37 comprises a pole piece42 which controls an armature 43 and which armature in turn operates a contact 45, this contact being open only when the relay is deenergized. This contact 45 controls the circuit for a warning signal 13 which, as here shown, is a bell. This circuit is from battery 19, through wires 38 and 46, bell 13, wire 47 contact 45, wire 48 to battery 19. With the parts thus far described,'it will be obvious that when contact 2 is closed and the brake is released, relay 37 will be energized, thus closing contact 45, so that the warning signal 13 is operated. In order to cause the signal, to continue to operate if the brake is reapplied, I provide a device for latching armature 43 in the closed position. This advice, as here shown, comprises a roller 44 carried by a spring 44, which is attached to the relay 37. Roller 44 coacts with the end of armature 43 in such manner as to permit thisarmat-ure to close in response to energization of the relay 37 but to prevent the armature returning to its open position upon subsequent deenergization of the relay.

The operation of the apparatus is as follows: While the automobile is running the brake is, of course, released so that contact 35 i's-closed, but contact 2 is held 0(pen by lock 1so that relay 37 is not energize The bell is therefore silent. When the automobile is brought to rest the brake is first aplied, thus closing contact 35, and the lock 1 1s then turned to allow contact 2 to close. The key is then removed so that contact 2 cannot again be opened except by the insertion of the proper key. If now an unauthorlzed person attempts to start the automobile, the brake is first necessarily released, thus closing contact 35, whereupon relay 37 closes and the bell 13 rings, calling attention of ersons in the vicinity that the automobile 1s being tampered with by an unauthorized person. Owing to the roller 44, the bell continues to ring even if the brake is re-applied, hence the unauthorized person cannot silence the bell after discovering thatthe automobile is protected by my warningv apparatus. The bell may be silenced by operatlng the lock 1 to open the contact 2, because the movable member of this contact is provided with .a block 49 which, when the contact 1s opened,

swings armature 43 to the open osition and so Opens contact 45 which contro s the signal.

It will, of course, be understood that the parts of contact 2 and also the entire relay 37, including the parts of contact 45, are inclosed so that they cannot be tampered with.

Although I have herein shown and described only one form of apparatus embodying my invention, it is understood that changes and modifications may be made therein without departinglfrom the spirit and scope of my invention.

Having thus described my invention, what I claim is: 1

In combination, a vehicle having a brake, a relay on said vehicle, a warnmg signal controlled by said relay and operated when the there by the closing of said relay circuit even though the circuit be subsequently opened by re-ap'plication of the brake, and manually operable means for simultaneously opening said second contact and forcing said armature out of attracted position.

In testimony whereof I aflix my signature in presence of two witnesses.

BRUNO ZABEL.

Witnesses A. H. LEsER, TILLIE LIEB. 

